PreTeXt Sample Book Abstract Algebra (SAMPLE ONLY)

                          <exercises xml:id="chapter-exam" label="chapter-exam" time-limit="15" pause="yes">

                          <title>Timed Chapter Exam</title>

                          <introduction>

                            <p>
This is an <tag>exercises</tag> division, as a peer of the <tag>section</tag> in this <tag>chapter</tag> of a <tag>book</tag>.  It is also setup as a Runestone timed exam.  So it is an example of how you might have a per-chapter exam.  This contrasts with an earlier timed exam which is constructed as a per-section exam (<xref ref="timing-exercises"/>).  The exercises are the same here, but in a different order.  As a test, this exam is <q>pauseable</q> and has a 15 minute time limit.
                            </p>

                          </introduction>

                          <exercise label="multiple-choice-not-randomized-timed-two">

                            <title>Multiple-Choice, Not Randomized, One Answer</title>

                            <idx>stop signs</idx>

                            <statement>

                              <p>
What color is a stop sign?
                              </p>

                            </statement>

                            <choices>

                              <choice>

                                <statement>

                                  <p>
Green
                                  </p>

                                </statement>

                                <feedback>

                                  <p>
Green means <q>go!</q>.
                                  </p>

                                </feedback>

                              </choice>

                              <choice correct="yes">

                                <statement>

                                  <p>
Red
                                  </p>

                                </statement>

                                <feedback>

                                  <p>
Red is universally used for prohibited activities or serious warnings.
                                  </p>

                                </feedback>

                              </choice>

                              <choice>

                                <statement>

                                  <p>
White
                                  </p>

                                </statement>

                                <feedback>

                                  <p>
White might be hard to see.
                                  </p>

                                </feedback>

                              </choice>

                            </choices>

                            <hint>

                              <p>
What did you see last time you went driving?
                              </p>

                            </hint>

                            <hint>

                              <p>
Maybe go out for a drive?
                              </p>

                            </hint>

                          </exercise>

                          <exercise label="vector-space-dimension-timed-two">

                            <title>True/False</title>

                            <idx>vector space</idx>

                            <statement correct="no">

                              <p>
Every vector space has finite dimension.
                              </p>

                            </statement>

                            <feedback>

                              <p>
The vector space of all polynomials with finite degree has a basis, <m>B = \{1,x,x^2,x^3,\dots\}</m>, which is infinte.
                              </p>

                            </feedback>

                            <hint>

                              <p>

                                <m>P_n</m>, the vector space of polynomials with degree at most <m>n</m>, has dimension <m>n+1</m> by <xref ref="theorem-exponent-laws"/>.  [Cross-reference is just a demo, content is not relevant.]  What happens if we relax the defintion and remove the parameter <m>n</m>?

                              </p>

                            </hint>

                          </exercise>

                          </exercises>